16
●
Make sure that these mounting beams are
accurately aligned and firmly integrated with
the airframe, reinforcing the adjacent
structure to absorb vibration. Use 3mm or
larger steel screws, preferably Allen type
hexagon socket head cap screws, with
washers and locknuts, for bolting the engine
to the bearers.
How to fasten the mounting screws.
Hardwood mounting beams
Radial motor mount
(cast aluminum)
Tighten second nut
firmlydown onto first nut.
Tighten this nut first.
Steel washer
3mm steel nuts
3mm steel screw
Spring washer or
lock washer
15mm min.
15mm min.
Hardwood such as
cherry or maple.
Spring washer
3mm steel Allen screw
INSTALLING THE GLOWPLUG
Install washer on glowplug and
insert carefully into cylinder-head,
making sure that it is not cross-
threaded before tightening firmly.
Glow plug
Washer
17
Screw the header pipe into the cylinder head
until it “bottoms” , then unscrew sufficiently to
achieve the desired exhaust angle and tighten
the lock nut securely with a 14mm wrench.
Screw the silencer onto the outer end of the
header pipe and tighten the other locknut.
The application of a heatproof silicone sealant
to the threads of the exhaust system is
recommended to reduce the risk of joints
loosening and the leakage of exhaust gasses
and oil residue.
SILENCER & EXHAUST HEADER PIPE INSTALLATION
Lock Nut
Apply silicone sealant.
Exhaust Header Pipe
Reminder:
Model engines generate considerable heat
and contact with the header pipe or silencer
may result in a serious burn.
If you need to tighten the silencer joints,
which may loosen when they are hot, use a
thick folded cloth for protection.
